Transparent, near infrared-shielding glass ceramic
Optically transparent glass ceramic materials comprising a glass phase containing and a crystalline tungsten bronze phase comprising nanoparticles and having the formula M x WO 3 , where M includes at least one H, Li, Na, K, Rb, Cs, Ca, Sr, Ba, Zn, Cu, Ag, Sn, Cd, In, Tl, Pb, Bi, Th, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and U, and where 0<x<1. Aluminosilicate and zinc-bismuth-borate glasses comprising at least one of Sm 2 O 3 , Pr 2 O 3 , and Er 2 O 3 are also provided.
1. A glass comprising, comprising:
56 mol %≤SiO 2 ≤78 mol %;
8 mol %≤B 2 O 3 ≤27 mol %;
0.5 mol %≤Al 2 O 3 ≤14 mol %;
1 mol %≤WO 3 ≤10 mol %; and
R 2 O in mol % such that −10 mol %≤(R 2 O−Al 2 O 3 )≤0.1 mol %, where R 2 O is at least one of Na 2 O, K 2 O, Cs 2 O, and/or Rb 2 O.
2. The glass of claim 1 , more specifically comprising 60 mol %≤SiO 2 ≤78 mol %.
3. The glass of claim 1 , more specifically comprising 1 mol %≤WO 3 ≤5 mol %.
4. The glass of claim 1 , further comprising 0 mol %≤SnO 2 ≤0.5 mol %.
5. The glass of claim 1 , further comprising 0 mol %<Li 2 O≤9 mol %.
6. The glass of claim 1 , further comprising 0 mol %<Na 2 O≤9 mol %.
7. The glass of claim 1 , further comprising 0 mol %<K 2 O≤9 mol %.
8. The glass of claim 1 , further comprising 0 mol %<Cs 2 O≤10 mol %.
9. The glass of claim 1 , further comprising 0 mol %<Rb 2 O≤9 mol %.
10. The glass of claim 1 , more specifically comprising 9.8 mol %≤B 2 O 3 ≤11.4 mol %.
11. The glass of claim 1 , further comprising at least one of:
0 mol %≤MgO≤0.5 mol %;
0 mol %≤P 2 O 5 ≤2 mol %; and/or
0 mol %≤ZnO≤1 mol %.
12. The glass of claim 1 , wherein, in mol %, 0<(Na 2 O+K 2 O+Cs 2 O+Rb 2 O)≤9.
13. The glass of claim 1 , wherein, in mol %, 0≤(R 2 O/WO 3 )≤4.
14. The glass of claim 1 , wherein, in mol %, 1≤[(R 2 O+Al 2 O 3 )/WO 3 ]≤6.